TASK 72-32-25-300-028 No. 3 Bearing Face Seal - Repair The Anti-Rotation Slot By Bushing Repair, Repair-028 (VRS3751)

DMC:V2500-A0-72-32-2502-00A-664A-C|Issue No:001.00|Issue Date:2013-11-01

Export Control

EAR Export Classification: Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3), except for the following Service Bulletins which are currently published as EAR Export Classification 9E991: SBE70-0992, SBE72-0483, SBE72-0580, SBE72-0588, SBE72-0640, SBE73-0209, SBE80-0024 and SBE80-0025.

Copyright

© IAE International Aero Engines AG (2001, 2014 - 2021) The information contained in this document is the property of © IAE International Aero Engines AG and may not be copied or used for any purpose other than that for which it is supplied without the express written authority of © IAE International Aero Engines AG. (This does not preclude use by engine and aircraft operators for normal instructional, maintenance or overhaul purposes.).

Applicability

All

Common Information

TASK 72-32-25-300-028 No. 3 Bearing Face Seal - Repair The Anti-Rotation Slot By Bushing Repair, Repair-028 (VRS3751)

Effectivity

FIG/ITEM

PART NO.

02-150

2A1786

02-150

2A3854

02-150

2A4286

Material of component

DESCRIPTION

RR

SYMBOL

MATERIAL

No. 3 bearing face seal

-

-

General

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 03-392 WELDING WIRELOCALCoMat 03-392
NEWLOCALBushing2

Locally Fabricated Figure 4, Figure 5, Figure 6 and Figure 7

NEW0AM53Rivet4

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-32-25-350-001 Remove the Carbon Seal Element

      1. Remove the carbon seal element from the face seal assembly.

      1. Repair, VRS3393 TASK 72-32-25-300-007 (REPAIR-007).

        NOTE

        If this repair was not previously performed, proceed to step 10. If this repair was previously performed, do steps 5. through 9.

    2. SUBTASK 72-32-25-320-001 Remove the Bushings

      1. CAUTION

        DO NOT ENLARGE OR DAMAGE THE RIVET HOLE OR FACE AREA.

        Remove and discard the worn bushings.

      1. Drill the manufactured end of the rivets so that the remaining rivet piece can be punched out.

    3. SUBTASK 72-32-25-220-114 Examine the Slot

    1. Refer to Figure.

    2. Do a dimensional inspection of the slot width.

    4. SUBTASK 72-32-25-220-115 Examine the Rivet Holes

      1. Do an inspection of the rivet holes.

      1. Refer to the SPM TASK 70-39-03-390-501.

    5. SUBTASK 72-32-25-350-002 Repair the Wear on the Slot Area

    1. If the slot area must be restored to repair wear or to get the correct position of the new bushings, do the following.

      2. If necessary, repair the slots

      1. Repair, VRS3546 TASK 72-32-25-300-026 (REPAIR-026)

    6. SUBTASK 72-32-25-350-003 Repair the Rivet Holes

    1. Refer to Figure.

    2. If the rivet holes must be restored to repair wear or to get the correct position of the new bushings, do the following.

      3. If necessary, repair the rivet holes.

        1. Weld the rivet holes

        1. Refer to the SPM TASK 70-31-13-310-016. Use CoMat 03-392 WELDING WIRE and the Manual Gas Tungsten Arc (GTAW-MA) method

        2. Do a stress relieve of the face seal assembly

        1. Refer to the SPM TASK 70-37-07-370-501

      3. If necessary, machine/grind the welds flush at the rivet holes on both sides of the flange

        4. Do a fluorescent penetrant inspection of the face seal assembly

      5. Do a dimensional inspection of the carbon interface bore

        6. Clean the repair area

        1. Refer to the SPM TASK 70-11-26-300-503

    7. SUBTASK 72-32-25-320-002 Machine the Slots and Flange Thickness

    1. Refer to Figure and Figure.

    2. Machine the slots and flange thickness to accommodate the bushings at Locations F.

    8. SUBTASK 72-32-25-350-004 Locally Fabricate Bushings

    1. Refer to Figure, Figure, Figure and Figure.

    2. Locally fabricate bushings from AMS 5613 material as follows.

    3. Heat treat the bushings.

    4. Refer to the SPM TASK 70-37-28-370-501.

    5. Hardness must be HRC 25-33 or equivalent.

    6. Refer to Figure.

    7. Unless otherwise specified, break edges 0.005 to 0.015 in. (0.13 to 0.38 mm).

    8. Unless otherwise specified, surface finish must be 125 microinch or equivalent.

    9. Do a fluorescent penetrant inspection of the bushing.

    11. Chrome plate area D to a thickness of 0.0005 to 0.0015 in. (0.013 to 0.038 mm). Bake at 735 to 765 deg F (391 deg C to 407 deg C) for two hours after plating.

    12. Refer to the SPM TASK 70-33-02-100-501. Dimensions are after plating.

    13. Plating is optional and can be incomplete in area E.

    14. Refer to Figure.

    9. SUBTASK 72-32-25-110-084 Clean the Bushings

      1. Clean the locally fabricated bushings.

      1. Refer to the SPM TASK 70-11-03-300-503.

    10. SUBTASK 72-32-25-350-005 Install the Bushings

      1. Position and clamp bushings in place at Locations F.

      1. If this repair was not previously performed, drill the bushing rivet holes into the bushings and the face seal assembly.

        2. If this repair was previously performed, transfer drill the bushing rivet holes from the face seal assembly to the bushings. Secure with rivets.

        1. Refer to the SPM TASK 70-39-03-390-501

          NOTE

          It is permitted to exceed the edge distance requirements not more than 50 percent.

    11. SUBTASK 72-32-25-220-116 Do an Inspection of the Bushings

    1. Refer to Figure.

    2. Do a dimensional inspection of the bushing locations.

    12. SUBTASK 72-32-25-350-006 Install the Carbon Seal Element

      1. Install the carbon seal element to the face seal assembly.

      1. Repair, VRS3393 TASK 72-32-25-300-007 (REPAIR-007).

    13. Figure: Repair Details and Dimensions

    Sheet 1

    Legend
    Repair Details and Dimensions

    Sheet 1

    Close

    Figure: Repair Details and Dimensions

    Sheet 2

    Legend
    Repair Details and Dimensions

    Sheet 2

    Close

    Figure: Repair Details and Dimensions

    Repair Details and Dimensions

    Figure: Repair Details and Dimensions

    Sheet 1

    Legend
    Repair Details and Dimensions

    Sheet 1

    Close

    Figure: Repair Details and Dimensions

    Sheet 2

    Legend
    Repair Details and Dimensions

    Sheet 2

    Close

    Figure: Repair Details and Dimensions

    Sheet 3

    Legend
    Repair Details and Dimensions

    Sheet 3

    Close

    Figure: Repair Details and Dimensions

    Sheet 4

    Legend
    Repair Details and Dimensions

    Sheet 4

    Close

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:0AM53
Enterprise Name:IAE INTERNATIONAL AERO ENGINES AG
BU Name:NULL
Building:SUITE 400
Street:628 HEBRON AVENUE
City:GLASTONBURY
State:CT
Zip Code:06033
Country:USA
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Supply Number:Bushing
Type:sp01
Supply Short Name:
Supply Name:NEW
Suppliers:
ManufacturerRemarks
LOCAL
Manufacturer Code:LOCAL
Supply Number:CoMat 03-392
Type:sp01
Supply Short Name:CoMat 03-392 WELDING WIRE
Supply Name:CoMat 03-392 WELDING WIRE
Specification Groups:
Doc NumberType
AMS 577651410
Suppliers:
ManufacturerRemarks
LOCAL
2R602
58401
55596
Manufacturer Code:0AM53
Supply Number:Rivet
Type:sp01
Supply Short Name:
Supply Name:NEW
Suppliers:
ManufacturerRemarks
0AM53